Filter cartridge



FIG. 1 is a perspective view of a design for use as a filter cartridge.

FIG. 2 is a front view of the design according to the invention.

FIG. 3 is a rearview of the design according to the invention.

FIG. 4 is a left side view of the design according to the invention.

FIG. 5 is a right side view of the design according to the invention.

FIG. 6 is a top view of the design according to the invention; and,

FIG. 7 is a bottom view of the design according to the invention.

The elements shown in broken lines are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a filter cartridge, as shown and described. 